types of hydrometer

[144x]

I have seen in a specification for battery accessory equipment 2 hydrometers:
1.portable hydrometer
2.vent plug hydrometer
has anybody any information about the second type.
thanx in advance.

 

[alehman]

Maybe

http://www.explorergrp.com/prod-DSG-30.html

 

[jbartos]

Suggestion: Visit

http://www.thesolar.biz/Measuring_specific_gravity_article.htm

http://uuhome.de/william.darden/hydrometer.htm

http://www.solarelectric.com/products/level3_85.htm

http://www.4unique.com/battery/battery_stuff.htm

http://www.solar-electric.com/precbathyd.html

etc. for more info

 

[jbartos]

Suggestion: visit

http://www.thomasregister.com

and type Hydrometers under Product or Service which will return 57 companies to inquire about various types of hydrometers. A digital hydrometer should not be overlooked.